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Das im QUERCO-Experiment der WSL erworbene Forschungswissen über das Verhalten von Eichen im Umweltwandel wird für die Praxis (Forst und Naturschutz) aufgearbeitet und zielgruppengerecht kommuniziert. Dabei soll auch das Verständnis und die Zusammenarbeit zwischen Forschung und Praxis weiter verbessert werden. Zudem wird auch eine breite Öffentlichkeit informiert. Available languages: German |
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Microscopical changes in cells and tissues in response to various environmental stress factors are investigated in trees to develop diagnosis tools and understand the mechanistic link between stress and injury. |
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Die Modellökosystemanlage (MODOEK) wurde 1992 gebaut und erstmals in Betrieb genommen. Zurzeit steht eine Modernisierung der Steuerung bevor. In der Anlage wurden seit 1992 mehrjährige interdisziplinäre Projekte erfolgreich durchgeführt. |
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There can be no doubt that since the beginning of the industrial revolution CO2 levels in the air have progressively increased. Experiments on the effects of elevated concentration levels of CO2 and nitrogen deposits on a coniferous/deciduous forest were carried out by natural scientists. |
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This framework aims to investigate the fluxes in model ecosystem chambers and to trace and better understand the reactions of the plants and associated organisms to the chronic influence of important soil pollutants (Zn, Cu, Cd) and rain acidity. |
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Natural UV-B radiation has been decreased partially or entirely by different plexiglas filters. Reduced UV-B radiation induced in poplar an increased leaf area, assimilatory starch production, and epicuticular wax, but decreased anthocyan content. |
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By sunny weather, when increased ozone concentration lasts longer then 2 weeks, ozone symptoms can appear on leaves and conifer needles. The Validation Centre offers diagnosis, training, information and consulting. Products are an Ozon-Quiz, an Ozone-CD and the International Ozone Injury Database. |
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What are the connections between morphological and structural changes, cell injury, cytochemical mechanisms, photosynthetic activity and chlorophyll fluorescence, and biomass production in young trees under near-ambient ozone? |
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The aims of this project are to investigate the reactions of trees in the context of above ground (ozone) and below ground pollution (heavy metals). Are the effects of ozone in the air and heavy metals in the soil independent or do they reduce or reenforce each other? |
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The epicuticular wax layer on the needle surface from conifer trees has been chemically analysed and viewed with a scanning electron microscopy with respect to the needle development at different environmental conditions (SO2 and ozone concentration, climate and site). |
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Mit diesem Kleinprojekt haben die Forschenden Erfahrungen über die Fleckenbildung an Fichtennadeln gesammelt. Dadurch können sie Fleckensymptome besser interpretieren. Die Erfahrung, wie sich das Gewebe in gesunden Nadeln im Jahresverlauf entwickelt, hilft Alterungserscheinungen von anderen Einflüssen zu unterscheiden. Available languages: German |
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Does the waste incineration plant of Niederurnen (GL) influence the protection forest next to it? In order to find answers to this, scientists monitored the contamination in the leaves of marked beech trees. |
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An ausgewählten Orten im Ostluft-Gebiet ( Zürich, St. Gallen, Glarus und Liechtenstein) wird untersucht ob, wo und an welchen Baum- und Straucharten Ozonschäden auftreten und in welchem Verhältnis diese zu den ge-messenen Ozonkonzentrationen stehen. Available languages: German |
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Querco, in the sense of "quid Quercus, quo vadis?" To study the reaction of 3 local species of oak (each species with 4 provenances) to drought, increasing air temperature and a combination of the two will be the focus of this experiment. |
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Poplar "guinea pig": Are poplar clones, selected for their tolerance to boron and salt contamination also tolerant to metal contamination or drought stress? Californian (USA) poplar clones were selected for their tolerance to boron and salt contamination in the soil. Cuttings from such clones grown in contaminated and control soil in California have been put into soil with and without metal contamination at Birmensdorf (CH) to test their tolerance to metal contamination. |